Allow "Current Session" to be read in order to backup it

Problem:
Sometimes Opera or OS crashes and "Current Session" file become destroyed. Upon restarting Opera "Last Session" file is being overwritten with corrupted "Current Session" and there is only one way to recover the session: backup. Btw, if you have not performed any backups you can still try running cmd with admin rights and check if there are any shadow copies with

you might be lucky as you can create a junction to a read-only shadow copy and check if a "Last Session" from that shadow copy can be used. Junction is created with the following command (last slash is important):

Good solution:
Automatically backup "Last Session", Although this solution is better than having not backups at all, it does not prevent losing tabs from current session. Oftenly session can last days or even weeks.

Even better solution:
Backup "Current Session" file. Unfortunately it is locked even for reading while Opera is running. The suggestion is to allow "Current Session" to be read in order to backup it.